osaood



(No Model.) 3 Sheets --Sheet 1.

R R. OSGOOD.

EXGAVATOR.

No. 342,454. Patented May 25, 1886.

(No Model.) 3 Sheets-Sheet 2.

R R. OSGOOD.

EXGAVATOR. 7

No. 342,454. Patented May 25, 1886.

(No Model.) 3 Sheets-Sheet 3.

R R. OSGOOD. EXGAVATOR.

N0."342,454. Patented May 25, 1886.

UNITED STATES PATENT OFFICE.

RALPH R. OSGOOD, OF ALBANY, NEV YORK.

EXCAVATO R.

SPECIFICATION forming part of Letters Patent No. 342,454, dated May 25, 1886.

Application filed August 4, 1884. Serial No. 139,600. (No model.)

To all whom it may concern.-

Be it known that I, RALPH R. OSGOOD, of Albany, county of Albany, and State of New York, have invented certain new and useful Improvements in Excavators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings,and to the letters of reference marked thereon.

My invention has relation to that class of machines employed for excavating earth and other material, and provided with a scoop or other dipper arranged and mounted so as to take the load, elevate it, swing it toward either side of the machine, dump it, and be returned to position to take another load. These machines, when intended for use upon land, are usually mounted on wheels, intended to run upon tracks or ways, and are commonly called excavators or land-machines.

The object of my invention is to provide an excavator of the abovementioned class with simple, durable. and efiicient means for turning the whole of the main frame or car of the machine over or across the tracks, or to reverse the machine entirely, thus making the machine in effect double-ended or capable of working in the direction of either end, the machine being held stationary while performing its digging or loading and unloading operations. To accomplish this my improvements involve certain novel and useful peculiarities of construction, relative arrangements or combinations of parts, and principles of operation, all of which will be herein first fully described, and then pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a side elevation of one form of excavator having my improvements applied in connection therewith, the main working elements of the machine being represented in outline and the machine and excavator in position to be reversed in accordance with my invention. Fig. 2 is a side elevation and partial sectional view upon a scale somewhat larger than Fig. 1, representing the car-body turned part way around or across the line to the tracks, the upper portions of the machinery being broken away. Fig. 3 is a top or plan view (on a still larger scale) of the car-turning-table appliance shown in previous figures, the position of the carbody being indicated by dotted lines. Fig. 4 is a side elevation and partial section showing the construction and arrangement of the upper part of the car-turning table, and Fig; 5 is a similar view showing the same with the anti-friction rollers omitted.

In all these figures like letters of reference, wherever they occur, indicate corresponding parts. i

To illustrate the application of my invention, I have represented the same as being applied in connection with what is now ordinarily known as a boom-machine-that is, a machine or excavator wherein the dipperhandle is mounted upon a boom,which in turn is hinged upon a turntable at its base; but it will be apparent that my improvements are likewise applicable in connection with exca vators of other styles which are provided with means for raising and swinging the load while the car or body of the machine remains stationary, as above indicated.

A represents the main frame of the car or platform, upon which the excavating machinery is mounted.

B is the dipper or scoop; O, the dipper-handle; D, the boom or other support therefor, and E the turn-table, mounted upon the carbody and employed for the purpose of swinging the load toward either side of the machine while the car or platform remains stationary.

F represents the A-frame for sustaining the boom and its appliances at any desired angle.

G is a boiler; H, an engine, and I a chaindrum. All these partsare mounted upon the car body or platform, and may be arranged and adapted to operate in any preferred manner.

In operating these excavating-machines it frequently becomes desirable to reverse the machine upon its trackthat is, so that after it has finished its work in one direction it may be turned so as to proceed in the opposite direction. For other reasons, also, it is often desirable to reverse the machine, or to turn it partly across the track. To provide for thus turning the machine, I supply a turn-table capable of supporting the whole weight of the machine, the same being connected with the car body or platform and arranged to travel therewith upon the track as the machine is ICO moved back and forth, but which is intended to remain stationary while the car is being turned thereon. K is the ring or bed of the car-turning table, the same being preferably made of channel or angle iron, as indicated, and amply strong for the purposes intended. It is braced and stiffened in its different parts, as by the pieces I. L and cross-connection M, also of angle or channel iron, or other suit-able material, applied in a workmanlike manner.

.The pieces L L afford convenient means of mounting the axles N N of the car-wheels O 0, (preferably fourin number,) which sustain the car-turning table, and also the weight of the whole machine, when the car is being turned. This turn-table is connected with the car-body by means of a king-bolt, as represented at I.

Q, is a metallic ring, affixed to the under side of the car-body and intended to operate in connection with the turn-table appliances.

Conical anti-friction rollers, as a a, &c., (of any number,) may be mounted between the rings Q and K. \Vhen these anti-friction rollers are employed, they may be axled between straps or bands, as b b, and prevented from becoming displaced or disarranged by three, four,

7 or more tie-rods, as c '0, connected with a ring,

d, arranged to turn about the kingbolt P. These rollers may be omitted, and the ring Q arranged to bear and travel on the ring K, as indicated in Fig. 5. A little oil or lubricating material between the two parts will ordinarily suflice to make them work sufficiently freely for all practical purposes. The car is supplied with forward wheels, R, and rear wheels, S, and these wheels, together with those at O,'sustain the weight of the machine while at work, and they (the forward and rear wheels) operate as supports for the front and rear ends of the car while the machine is at work, thus bracing and holding the machine steady, as required, and not permitting it to move upon its turn-table.

The ordinary track or rails are represented at e, the same being fixed upon cross-tiesf in the usual fashion. At 9 are supplemental pieces of track, intended to rest upon the tops of tracks 6, the same being supplied with any suitable side pieces, as h h, for holding them in place and for facilitating their adjustment when required for use. These supplemental sections may be of any length, so that they are easy to handle, and their extremities are gradually inclined, so as to facilitate running the machine on and off. They are not intended to extend along the tracks a greater distance than the reach between the forward and rear car-wheels.

\Vhen it is desired to turn the machine around or to reverse it, the supplemental pieces are applied to the tracks in front or rear of the machine and the machine run thereon, as indicated in Fig. 1, in which position the forward and rear wheels of the car willbe raised from off the main tracks, so that they may be moved over or across them without striking them. Then the car may be swung around upon its turntable, and when completely turned moved down from off the elevation and the supplemental pieces detached from the tracks. The machine is then ready to go to work again, all of its wheels bearing evenly upon the tracks and properly supporting the weight and steadying the machine. If the machine be not entirely reversed,the tracks may be shifted while the machine is elevated, so as to come under the forward and rear wheels.

T T are capstans, such as are usually applied on the sides of excavators, the same being arranged to be driven by power, and intended for winding ropes or chains for various services on or about the machine.

WVith my improved appliances of course the machine may be turn ed by any suitable power; but I prefer to use the capstans for this pur pose.

A rope, chain, or cable, '1 Fig. 3, is con-.

nected at one end with the turn-table ring K, finding a convenient seat in the exterior channel thereof, andat the other end with one of the capstans. Under this arrangement, by turning the capstan, the turn-table remaining stationary, it is apparentthat the whole machine will be swung around toward the side on which the line is applied. It may be applied on either side at pleasure. The turntable is of such extent or is so located with respect to the car-body,or the machinery is so disposed upon the car, as to obviate undue tipping of the machine when being reversed.

\Vhen constructed and. arranged for opera tion substantially in accordance .with the foregoing explanations,the improvements will be found in practice to admirably answer the purpose or object of my invention as previously set forth.

I am aware that cars have heretofore been provided with turntables of various constructions, located beneath and connected with them, for enabling them to be turned, and I do not wish to be understood as making any claim to such constructions, the object of my invention being, among other things, as before pointed out, to make my improved excavator double-ended. 7

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a machine of the character herein set forth, provided with forward and rear wheels, the combination, with the car body or platform,of a turntable also mou nted upon wheels, the same being connected with the platform between said forward and rear wheels, and arranged for operation substantially as shown and described.

2. The hereindescribed excavator, composed essentially of the following elements, viz: a dipper for taking the load, means for swinging the load toward either side of the machine, a car or platform for supporting the operating machinery, a turn-table for supporting the machine when being turned across or over upon the track, and means for steadying or supporting the car at each end, these parts being combined for operation substantially as and for the purposes set forth.

3. In an excavator having a turn-table for swinging the dipper, the carbody provided with a capstan mounted thereon and movable therewith, said car-body beingmounted upon and arranged to turn upon aturn-table, and a rope or line connected with the turn-table and with the capstan, these parts being combined for operation substantially as and for the purposes set fOI'ih.

4. The combination, as before set forth, of

RALPH R. OSGOOD.

\Vitnesses:

JOHN BUCKLER, WoR'rn OSGOOD. 

